Hand vise of the lever-and-plunger-operated sliding-jaw type



Aug. 28, 1951 H. D. SNELL 3 HAND VISE OF THE LEVER-AND-PLUNGEROPERATEDSLIDING-JAW TYPE Filed Nov. 18, 1947 2 Sheets-Sheet 1 & v I

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By @Al 2 Sheets-She t 2 Aug. 28, 1951 1-1.0. SNELL 2,566,072 HAND VISEOF THE L R-ANDPLUNGER-0PERATED SLI DI -JAw TYPE Filed Nov. 18, 1947 A Q(ow Q E m m H n H H Q 6? g 5 mm mm. v 7 v v u /M I MM IVN v I Ham 0.Snell Patented Aug. 28, 1951 HAND VISE OF THE LE-VER-AND-PLUNGER-OPERATED SLIDING-JAW TYPE Harm D. Snell, Port Arthur, 'Iex., assignor oftwenty-five per cent to Joann Snell, Port Arthur, Tex.

Application November 18, 1947, Serial No. 786,699

2 Claims. 1

My invention relates to improvements in vises of thelever-and-plunger-operated sliding-jaw typ The primary object of myinvention is to provide in a hand vise having a fixed jaw, a movablejaw, and a carriage for advancing and retracting the movable jaw,improvedmeans for advancing the movable jaw relative to the carriage totighten the movable jaw against the work, and which is operative byswinging movement of a hand lever on the carriage and by a plunger inthe hand lever operative by a hand grip section feedable on and alongthe hand lever, and whereby a vise is achieved which is better suitedfor clamping easily bruised and crushed work, for instance, wood,without mutilating the same.

Another object is to provide a vise of the type and for the purposeabove set forth which involves few parts, to provide a vise ofinexpensive construction, and one which will not quickly get out oforder from prolonged use.

Other and subordinate objects also, Within the purview of my invention,together with the precise nature of my improvements will be readilyunderstood when the succeeding description and claims are read withreference to the drawings accompanying and forming part of thisspecification.

In said drawings: I

Figure 1 is a view in side elevation of my improved vise, in a preferredembodiment thereof, partly broken away;

Figure 2 is a view in plan, partly broken away;

Figure 3 is a view in longitudinal section taken on the line 33 ofFigure 2;

Figure 4 is a fragmentary view in transverse section taken on the line4-4 of Figure 1;

Figure 5 is a view in transverse section taken on the line 55 of Figure1 and drawn to a larger scale; and

Figure 6 is a view in longitudinal section taken on the line 66 ofFigure 2 and drawn to a larger scale.

Referring to the drawings by numerals, my

improved vise, as illustrated, comprises an elongated plate 1 with afront end 2 widened for strength, longitudinal parallel side edgegrooves 3 therein, for a purpose presently seen, and a reduced, coplanarrear end handle 4.

A fixed jaw 5 is secured, in any suitable manner (not shown) on thefront end 2 of said plate I at a right angle to what constitutes theworking face 6 of said plate, and which extends completely across saidend 2.

A longitudinal row I of ratchet teeth is provided in the longitudinalcenter of said plate I flush with said working face 6 and the purpose ofwhich will presently become apparent.

A movable jaw 8 straddles the plate I transversely thereof and extendsacross said working face 6 for coaction with the fixed jaw 5, saidmovable jaw 8 being slidably connected to said plate I for advance andretraction along said plate 1 into and from clamping relation to thefixed jaw 5. The connection between the movable jaw 8 and said plate Itakes the form of inturned guide ribs 9 (see Figure 4) on said jawslidably fitted in the beforementioned grooves 3.

' A movable carriage ID for the movable jaw 8 straddles said plate 8transversely thereof in the rear of said movable jaw and is slidablyconnected to said plate I for advance and retraction With said movablejaw. The slidable connection for the carriage l0 also takes the form ofguide ribs H (see Figure 5) on said carriage fitted in said grooves 3.

A pair of bolts l2 extend through the movable carriage In near oppositesides thereof and are threaded into the movable jaw 8 with rear endkerfed heads I3 thereon slidable in bores [4 provided in said carriageI0.

Coil springs l5 in said bores l4 and on said bolts I2, interposedbetween said heads [3 and the front ends of said bores M, urge saidbolts 12 rearwardly to normally urge the movable jaw 8 toward themovable carriage I0.

' A plate-like pawl I6 is pivotally mounted on the movable carriage H1,at the rear thereof, to ratchet over the ratchet teeth I during advanceof said carriage I0 and hold said carriage advanced, and is springpressed by a suitable spring I! to engage said teeth 1. The mountingfor'said pawl [6 comprises an attaching hinge plate l8 set into thebottom of the movable car- .riage l0, and bolted thereto by screws,'asat l9-. A finger 28 on said pawl It provides for manually swinging thesame into idle position.

A hand lever designated as a unit by the numeral 2| is provided on themovable carriage l0 and comprises a tubular front shank section 22having a forked front end 23 pivoted by screw studs 24 between a pair ofears 25 on top of said carriage ll] so that said shank section 22 isswin able toward and from the plate I respectively, about an axistransverse to the line of movement ofsaid carriage ID.

A tubular hand grip section 26 with a rear end closed by a screw plug 21is threaded onto the rear end of said shank section 22 for feedingfonwardly and rearwardly thereon for a purpose presently seen.

A plunger rod 28 is fitted in said shank section 22 to extend forwardlybeyond the forked end 23 of said section and rearwardly out of saidsection into the. hand grip section 26, and is endwise slid able in saidshank section 22. The plunger rod 28 has a front end eye 29'pivotallyconnected by a transverse pin 30 between a pair of ears 31 onemotion-compensating link 32 pivoted by a pin 33 in the rear side of themovablejjaw 8. The; pins 30, 33 provide pivotal axes for the front endofsaid rod 28 and said link ttparallelto. the pivotal, axis of the shanksection 22. As will be seen,,t'hei eye 29 and pin 30 form a jointbetween the front end of the lever 21 and the movable jaw 8, permittingswinging of said lever toward and away from the plate I in connectionwith saidmovable. jaw, said joint assuming a dead center positionrelative to. the, axis. oi movement of the link 32 and. the shanksection 22 when said hand. lever 21L inan; intermediate position. Inthis connection, a rear shoulder as on the movable carriage ll].engages, the, shank. section 22 to. limit movementof saidhand' l'everv2] toward the plate I,

and a. front shoulder. 35,011 sai'dcarri'age Hisimil'arlylimitsmovement. of. said lever it away from said plate I Referring nowto. the. use. and; operation of the described vise; With. the handgripsection 26' of thehand lever 2 l' backedoif on the shank sectionZLSufficientIy, andsaid'handllever 2i swunginto.

its of movement. away from: the. plate l, the coil. springs. 15 act to,retract the bolts. l2 in the bores [4L and thereby hold the movable jaw8 against. thefrontof the movable carriage ill. By shoving, the movablecarriage 10, through. the medi'umof the handlever 2! forwardly, themovable jaw 8'. will he. slid to advance the same. into engagement withapiece of work. as. shown in dotted lines at 3'!" in Figures 1 and. 2, asinter.- posed. betweenthe fixed and movable jaws 5, 8. During. thisoperation, the pawl it will idle over the ratchet teeth 1. Now, byshoving forwardly on. the hand. lever Eli and swinging the same into itslimit of movement toward the plate l, the movable, carriage lliwill bebacked off from the movable jaw 8i when the pivot pin 30', or theprevi'ously describ'ed'joint, assumes dead center relation to the pins24, 33; until the pawl 6'6 looks against a ratchet tooth I; This locks.the movable jaw 8. in approximataloose clamping position to the piece ofwork 3 8i By turning the hand grip section forwardly on the shanksection 22',thus

causing the plunger rod 28 to be thrust forwardly in the shank section22, the movable jaw 8 may be forced into tight clamping relation to thepiece of work 36, as desired. By swinging the pawl ['6 into idleposition, through the finger 29, the movabl'ecarriage It will beunlocked for retraction of the movable jaw 8, in. a manner which will beclear, out of clamping. relation to the piece of work 36.

The foregoing will, it is believed, suffice to impart a clearunderstanding of my invention, without further explanation.

iii)

Manifestly, the invention, as described, is susceptible of modification,without departing from the inventive concept, and right is hereinreserved to such modifications as fall within the scope of the appendedclaims.

Having described the invention, what is claimed asnew is:

1. In a work piece clamping vise of the class described, a plate havinga working face and a fixed jaw on said face, a clamping assemblyineluding a movable jaw, said clamping assembly being-'slidably mountedon said plate for advance over said working, face to engage the movablelaw with thework piece interposed between said jaws and, to looselyclamp the work piece therebetween, a hand lever pivotally connected tosaid clamping assembly for swinging movement relative thereto andincluding a hand grip section threaded thereon for feeding along thesame, means operative by. swingingv movement of. said lever to. locksaid clamping, assembly against retraction after engagement of themovable jaw with. the work. piece, and, means operative. by feedingmovement of said; hand rip, section to advancev said movable. jaw in thelocked position of: said clamping. assembly. for, tight clampingengagement, of; said movable jaw with the work, the lash-mentioned.means including, a plunger rod. slidabl'e. in.said hand. lever, and. atoggle, link connecting said rod and, said movable jaw.

2.. In a, work clamping vise of the class described, a plate, a. fixedjaw on said plate, a clamping jaw assembly comprising a carriagesli'dably mountedon said. plate for movement t0? ward or. away from thefixedjaw, a jaw slid'ably mounted on said carriage for movement. towardor away from. said fixed jaw independently of movement of. saidcarriage, a hand lever on said carriage for pushing, the same to advancesaid carriage. and movable jaw. in unison, said hand l'ever beingpivoted on. the carriage for swinging movement with. respect thereto,means sequentially. operative. by swinging movement of said hand. lever.to lock said. carriage to said plate and to. advance. the movable jaw,said meansv includaplunger rodimounted in said hand lever and swingable,therewith, and slidable in the hand lever to still further advance themovable jaw independently of the carriage, and a hand grip memberieedable along said. hand, lever to slide saidlplimgen.

HARM D. SNELL.

REFERENCES CITED The following references are of record in the file oithis, patent:

UNITED STATES PATENTS

